Sash-pulley.



No. 673,93I. Patent ed may I4, 19m.

R. STALLMEIER.

SASH PULLEY.

Application filed Aug. 3, 1900.

(No Model.)

lvihmaaco fa I Ste ROBERT STALLMEIER, OF ROCHESTER, NEV YORK.

SASH-PULLEY.

SPECIFTGATION forming part of Letters Patent No. 673,931, dated May 14,1901.

Application filed August 3, 1900.

To all whmn it may concern:

'Be it known that I, ROBERT STALLMEIER, a citizen of the Unit-ed States,residing at Rochester, in the county of Monroe and State f New York,have invented a new and useful Pulley, of which the following is aspecification.

My invention relates to pulleys, and more particularly to that class ofpulleys used in window frames for supporting the sashweight; and it hasfor its object to produce a pulley of this kind and a frame or casingfor the same which will be simple, compact, and efficient and which canbe quickly secured in position without the use of screws or otherseparate retaining devices.

With this object in view myinvention consists in the improvedconstruction and novel arrangement of parts of a pulley and a casingtherefor, as will be hereinafter more fully set forth.

In the accompanying drawings, in which the same reference-numeralsindicate corresponding parts in each of the views in which they occur,Figure 1 is a perspective view of a pulley and its casing embodying myinvention. Fig. 2 is a front elevation, partly in section, of the same.Fig. 3 is a sectional view of the pulley and its axle. Fig. 4 is a Viewof the blank from which the frame or casing is made, and Fig. 5 is a topview of the casing complete.

Referring more particularly to the drawings, 1 indicates the pulley,which is preferably made from two annular disks 2 and 3,each of which iscurved or flared outwardly at its rim or periphery, as shown at 4., andbulged outward near its inner edge, as shown at 5. The flat portions 6of the two disks between the bulge and the curve are secured together inany desired manner, as by the rivets 7. An annular ring or washer 8 isriveted or otherwise secured between the inner edges of the two diskswithin the bulged portions. The inner portion of each of the bulges,adjacent to the ring, is formed or provided with a seat 9 for thereception of antifriction ballbearings 10, the outer edge of the seatextending over the balls far enough to retain them in their positions.

Apin 11 is passed through the perforation or opening formed through thecenter of the Serial No. 26,803. \No model.)

pulley and has its ends flattened or otherwise secured in engagementwith the sides of the frame 12. The frame is preferably formed from asingle piece of material 13, the ends of which are provided with lips orextensions 14, adapted to be bent laterally for engaging with thewindow-sash, and the central portion of each edge is notched or cutaway, as shown at 15. The portion of each edge be tween the notch 15 andthe end of the blank 13 is preferably provided with a lip 16, which isadapted to be bent outward for engaging with the window-casing to holdthe frame in position therein. Extending from the notch at a distancefrom the outer edge nearly to each end of the blank is anoutwardly-bulged portion 17, which is adapted to engage with the sidesof the opening in the casing and'assist in retaining the frame inposition, there being fourof these outwardly-bulged portions. The

blank is provided with two openings 18, which register with each otherwhen the blank is folded and form receptacles for the heads of therivets, the portion of the frame surrounding the opening being slightlycountersunk, as shown at 19. The central portion of the blank, betweenthe two notches, is adapted to be bent or curved at a distance into aloop 20 when the sides of the frames are bent parallel with each other,and the edges of the frame, at the ends of the lips 16, are curvedinward, as shown at 21, so as to abut against each other when the frameis complete.

In using my improved pulley and frame as above described the pulley isfirst formed by securing its disks together and inserting the rivet andball-bearings through its center. The blank is then doubled upon itselfto cause its ends to overlap the sides of the pulley and permit of thepassage of the ends of the rivets through the openings therein. Theheads of the rivets are then fastened to the sides, which completes thestructure.

Openings are made in the sides of the casing at the top in the usualmanner for the insertion of the frame and pulley, the openings being ofsubstantially the same area as the pulley-frame in longitudinal section.The

frame is then inserted into the opening as far as it will go, the lips14 engaging with the front wall of the casing and limiting the furtherinward movement of the frame and pre senting a neat appearance. Asuitable instrument of any kind is then inserted between the top andbottom, respectively, of the pulley and the frame, and the lips 16 arebent outward and forced into the wood of the frame a sufficient distanceto engage therewith and prevent the removal of the frame from thecasing. The cord from the window can then be passed over the pulleybetween the top of the frame and the loop 20 at the rear and down to theweight.

As above described, it will be seen that my improved pulley and framecan be manufactured very cheaply, as the disks forming the pulley can bestamped out of sheet metal and rigidly secured together at their fiatportions, which will form the web or central portion of the pulley, andthe frame can be formed from a single piece of sheet metal stamped intoshape with suitable dies and bent at its central portion, so that itssides may be rigidly secured in position by means of the rivet uponwhich the pulley is supported. The frame is invertible, so that it canbe used upon either side of the window-casing, and is complete withinitself, not requiring extra retaining means, and will be rigidly held inplace after having been once put in position.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. As a new article of manufacture, a pulley formed from two annulardisks, the edge of each of which is curved outward and the portionadjacent to the inner edge is bulged outward and provided with a seatfor ballbearings, and an annular collar secured between the flat inneredges of the disks, substantially as described.

2. In a pulley, the combination, with two annular disks having theirouter edges flared outward to form a groove and bulged outward neartheir inner edges to form ball-bearing seats, a frame having its edgesin contact above and below the pulley and its sides perforated toregister with the opening through the pulley, a rivet through the pulleyand in engagement with the sides of the frame to hold said edges incontact, and ball-bearings in the seats of the pulley in engagement withsaid rivet, substantially as described.

3. In a pulley, the com bination,with aframe formed from a single pieceof material, the central portion of which is cut away on its edges anddoubled upon itself and the ends are perforated and provided withlaterallybent lips at their forward edges and having their edges aboveand below the pulley bent toward and in contact with each other, saidupper and lower bent portions being provided with lips that are adaptedto be bent outward to engage with the support for the frame and hold thepulley-frame in position, a rivet through the perforations in the endsto hold the ends of the frame in position, and a pulley journaled uponsaid rivet, substantially as described.

ROBERT STALLMEIER.

Witnesses:

F. X. STALLMEIER, CAROLINE WITZEL.

